Coal-drilling machine



(No Model.) A & S J OOVEY 2Sheets-Sheet 1.

GOAL DRILLING MACHINE.

Patented Dec. 20, 1887.

g 7 d HEW (No Model.) 2 Sheets-Sheet 2. A. & S. J. GOVBY.

GOAL DRILLING MACHINE.

Patented Dec. 20, 1887.

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UNITED STATES PATENT OFFICE.

AMAZIAH OOVEY AND SAMUEL JAMES OOVEY, OF SIGOURNEY, IOWA.

COAL-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 375,262, dated December20, 1887.

Application filed July 8, 1887.

To aZZ whom it may concern:

Be it known that we, AMAZIAH Cover and SAMUEL JAMES COVEY, citizens ofthe United States, residing at Sigourney, in the county of Keokuk andState of Iowa, have invented a new and useful Improvement in Drilling-Machines, of which the following is a specification.

Our invention relates to an improvementin coal-drilling machines; and itconsists in the peculiar construction and combination of devices, thatwill be more fully set forth hereinafter, and particularly pointed outin the claims.

In the drawings, Figure l is a perspective view of a drilling-machineembodying ourimprovements. Fig. 2 is atop plan view. Fig. 3 is avertical longitudinal sectional view taken on the line 00 mof Fig. 2.Fig. 4. is avertical transverse sectional view taken on the line 3 1 ofFig. 2.

A represents a bar, which is rectangular .in cross-section and isadapted to be driven in the bed of coal or other material to be drilledor mined. Spikes are provided to engage more firmly with the coal-bed.

B is a collar or sleeve, which fits on the said bar and is adapted toslide longitudinally thereon, and the said collar or sleeve is providedwith a set-screw, G, by means of which it maybe clamped at any desiredlongitudinal adjustment on the bar. From the upper side of the sleeve orcollar B-projects a vertical headed stud, D, on which is journaled aframe, E. The said frame comprises two sections, F, made of cast metaland bolted together on opposite sides of the stud D, and provided withoutwardly-extending arms G, the ends of which are upturned and providedwith transverse aligned openings H.

I represents a frame,which is provided with projecting trunnions K,journaled in the openingsH. From the upper side of the frame, on thesides thereof projecting from the trunnions,extend two pairs of verticalears, L, that are provided with aligned openings M. The pides of theframe intermediate between the sairs of cars are provided withscrew-threaded collars N, which align with each other and are arrangedat right angles to the axes of the trunnions.

Serial No. 243,786. (No model.)

0 represents a screw,which extends through and works in the collarsNinthe frame I. The said screw is provided with a longitudinal groove, P,and on the ends of the screw are secured heads orsockets R, which areremovable from the screw and are adapted to receive the'inner ends ofboring bits or drills.

T represents a cylindrical sleeve, which is slipped over that portion ofthe screw between the openings M. From one side of the sleeve 'Iprojects a spindle, U, which is arranged at right angles with relationto the sleeve and has its outer end reduced and provided with screwthreads.

V represents a sleeve, which slips over the spindle U and is adapted torotate freely thereon, and to the inner end of the said sleeve isattached a miter gear-wheeLVV. Said wheel may be formed integrally withthe said sleeve.'

The outer end of the sleeve is squared and adapted to fit a detachablecrank-handle, X. Y represents a miter gear-wheel, which is arranged onthe screw between the opposing ends of the sleeve T and one of theopenings N. This gear-wheel is feathered or splined on the screw and isengaged by the wheel WV, a shown.

Z represents a hollow box,which is fitted on the sleeve V and in whichthe latter rotates, and the opposite sides of the said box are fiattenedand thereby adapt the box to fit between either pair of cars L. A pin,A, is adapted to pass through the transverse openings of the upper endsof the ears and over the block Z to secure the latter in position.

The crank X is provided with an opening, B, of a suitable size and shapeto adapt it, to be fitted onto one of the heads or sockets R, andthereby permit the screw-to be turned directly by means of the saidcrank when in confined spaces in which there is not sufficient room toattach the crank to the ends of the sleeve V. By this arrangement, also,the drill can be attached to either head R anddrill from either end.

By providing the frame I with the pairs of ears L on opposite sidesthereof, and by pivoting the sleeve T on the screw, the spindle, thesleeve V, and the box Z may be swung to one side of the frame, andthereby enable the crank to be attached to either side of the same,

the crank-handle is attached to the outer end of the sleeve V, a nut, 13is screwed onto the threaded end of the spindle U and caused to bearagainst the outer side of the crank, and thereby clamp the latter inposition on the sleeve.

Having thus described our invention, we claim-- 1. The combination, in adrilling-machine, of the frame I, having the aligned threaded openings Non opposite side, the screw-shaft O, passing through and engaging saidopenings, the miter wheel G, feathered to said screw-shaft, the sleeveT, journaled loosely on the said screw-shaft and having the spindle U,the sleeve V, jonrnaled on said spindle, and the miter-pinion \V,attached to said sleeve and meshing with wheel Gr, substantially asdescribed. I

2. The combination, in a drilling-machine, of the frame I, having thealigned threaded openings N, and the pairs of ears L on opposite sidesand arranged at right angles to the openings N, the screw shaft 0,extending through and engaging said openings, the wheel Y, feathered tosaid screw-shaft, the sleeve T, jonrnaled loosely on said screw-sl1aftand having the spindle U projecting at right angles, the sleeve V,journaled on said spindle, the miter-pinion XV, attached to said sleeveand meshing with wheel Y, and the box Z, in which the sleeve V rotatesand adapted to be fitted between either pair of cars, for the purposeset forth, substantially as described.

3. The combination, in a drillingmachine, of the sleeve or collar B,longitudinally movable on the draft-bar, the said collar having theheaded stud D, the frame E, journaled on the said stud and comprisingthe two sections F, bolted together andprovided with the outwardly-extending arms G, the frame I, having the trunnions journaled inopenings in the ends of the said arms, the serew-shaft, and theoperatingshaft secured to the said frame and geared together,substantially as described.

4. The combination, in a drilling-machine, of the sleeve or collar B,the frame E, swiveled thereto, the frame I, journaled to frame E andhaving the ears L on opposite sides and threaded collars N at rightangles to the said ears, the screw-shaft O, engaging the said openingsand extending through the frame I, the sleeve T, loosely mounted on thesaid screwshaft and having the spindle U projecting from one sidethereof, the miter-wheel Y, feathered or splined to the screw-shaft andarranged between one cnd of the sleeve T and the opposing end of one ofthe openings N, the sleeve V, journaled on the spindle U and having thepinion adapted to engage the wheel Y, the outer end of the sleeve beingadapted for the attachment of the crank, and the box Z, ar ranged on thesleeve V and in which the lat ter is journaled, said box being adaptedto enter the spaces between either pair of the ears L, substantially asdescribed.

5. In combination with the shaft 0, connecting with the angers or bits,the gear Y, mounted on the shaft 0, the sleeve T, encircling the shaft 0and turning thereon on one side of the gear Y, the shaft U, projcctin gfrom the sleeve '1, the sleeve V, fitted on the shaft U and carryinggear IV to mesh with the gear Y, and the handle connecting with thesleeve V, for operating the same, and thereby turning the gear TV, thesaid gear \V, sleeve V, and handle being capable of reversal from oneside of the machine to the other through the sleeve T, turning on thescrew-shaft O, and locking devices to hold the parts in either of theiradjusted positions, as set forth.

6. The combination, in a drilling-machine,

of the frame I, having the aligned threaded openings, and the pairs ofcars L at right angles to the said openings, the screw-shaft O, engagingthe threaded openings, the miter gear-wheel Y, feathered on said shaft,the box Z, adapted to be secured between either pair of ears L, and themiter gear-pinion 'W, having itssleeve or shaft journaled in the box andadapted for the attachment of a crank, as set forth.

7. In a drillingqnachine, the combination of the draft-bar A, the collaror sleeve B, movable longitudinally on the said draft-bar and having theheaded stud D on the upper portion thereof, the frame E, comprising thetwo arm-sections F, mounted on said stud D, the frame I, having thetrunnions K, engaging with the upper portion of the arnrscetions F andcomprising the aligned screw-threaded collars N and the vertical bars L,the screwshaft 0, having the groove 1? and extending through saidcollars N, the miter-wheel Y, feathered to the said screw-shaft O, thesleeve T, the spindle U, having the sleeve V and the box Z,and themiter-wheel IV, mounted on its inner portion and engaging withmiter-wheel Y, the pin A, and the crank-handle X, having the elongatedslot B, adapted to be attached to the outer end of the spindle U and toeither end of the screw-shaft O, substantially as described.

S. The combinatiomwith the frames E and I, the latter having ears L, ofthe shaft 0, the gearing Y therefor, the gear \V, for working thegearing Y on the shaft 0, the spindle U, on which said gear IVismounted, and which is swiveled to the shaft 0 at right angles thereto bythe collar T, so as to allow a reversal from one side to the other,andthe handle connected to the gear IV to turn the same in its movements,the sleeve V and box Z, mounted on said spindle, and the removable pinA, passing through the ears L of the frame I, to hold the spindle U inits adjusted position, substantially as described.

9. In a drilling-machine, the supporting-bar A and the sleeve or collarB, having the stud D and movable on said bar, in combination with theframe E, having arm-sections F jour- In testimony that we claim theforegoing as naled to the stud D on the sleeve B, whereby our own wehave hereto affixed our signatures to said frame may be movedlongitudinally or in presence of two witnesses.

laterally, and the frame I, trunnioned in the AMAZIAH COVEY.

5 frame E and carrying the collars N, the screw- SAMUEL JAMES OOVEY.

shaft 0, and the gears W and Y, said frame I Witnesses: allowing avertical adjustment of the auger or Y S. HAND,

bit, substantially as described. W. H. KLINE.

